Use PCS7 Instead of Teleperm XP in a Power Plant
Is it possible to use PCS7 instead of Teleperm XP at the power plant
Communication Between PLC and DCS
Student of Instrumentation eng. with final year project has a process loop control using DCS and PLC in master slave configuration.
Schneider Premium TSX573 Series with PL7Pro 4.2 Program Corrupted
Our PLC for the Filter Process Control suddenly triggers a different output when you select an input, and we should expect an output signal from the output bus to trigger a relay to start a pump. What could be the best trouble - shooting approach?
Point Guard I/O Safety Modules
Point Guard I/O Safety Modules with Compactlogix
By James Ingraham on 17 October, 2017 - 11:49 am
GuardLogix is required. There's actually a Compact GuardLogix, but I wouldn't use it, as it's...
PLC PID controller for flow density control
Comparison between DNP3 and MDLC
Technical comparison between MDLC (Motorola Data Link Communication) protocol and DNP3 protocol.
By Jacob Brodsky on 16 October, 2017 - 12:04 pm
As near as I can tell, MDLC is a proprietary protocol developed of, by, and for Motorola and their...
Program Retrieval From Triconex MP
Can we retrieve program downloaded in the Triconex MP?
Grain Dispenser System Fuzzy Logic Controller
Looking for tips for the design of a fuzzy logic controller for the gates of a grain dispenser
Is it possible to integrate the PLC with serial Modbus availability with a DCS controller over Modbus TCP/IP
I would like suggestions on how to "fluctuate" integer values randomly within a certain range in a Siemens S7/TIA Portal project and display these values on an HMI.
By DigiJoe on 10 October, 2017 - 10:42 pm
Still trying to figure out the best way to do this-adding noise to an integer in a data block. Any...
By DigiJoe on 1 October, 2017 - 8:50 pm
Thank you for your reply. Yes, I would like to vary integer values. I am not as concerned about...
Control Network Architecture
Trying to improve the our plant control system network architecture
New Website about TIA Portal
I would like to invite everyone interested to have a look at my website about TIA Portal
GML Commander on an AB 4100 Controller
Communication error when connecting GML Commander to an AB 4100-234-RL.
Acromag 961EN and Micrologix
Posted by Jeremy Pollard on 9 October, 2017 - 10:12 am
Interfacing Acromag 961EN and Micrologix over Ethernet
Fisher Positionner dvc6000
Communication problem between actuator dvc 6000 and DCS ABB. The actuator not responding. When the actuator is switched to the mode hart and command the actuator with hart 375 its respond.
I need to control a FC51 Danfoss VFD with LS PLC. I need to start , stop & jog the drives.
By uli on 4 October, 2017 - 11:16 am
I got an answer from Danfoss: Modbus TCP on Danfoss VFDs does not support coil addressing. Uli...
Controller Tuning for Non Self-regulating Process
Looking for a straightforward method for measuring the parameters of a 2nd order non self-regulating process, and then use them to calculate controller tuning parameters.
Yokogawa Prosafe 2.03 Debug Error
I am facing an issue regarding Yokogawa Prosafe Debug Mode on SCS_Simulator.
What would be the best PLC to connect several MasterFlex L/S 7523-90 pumps to the computer?
PLC and Transformer in an Enclosure
Is it good practice put a transformer in a enclosure?
By sanjibkumar9 on 24 September, 2017 - 1:42 am
>I have two questions. Well, is there how to monitor my >output in my PLC without a sensor?...
Is it possible to make a custom communication using a PLC as an I/O slave?
SLC 500 COP Instruction to N Register
I have a COP instruction with a 8 word length but no input type instructions.
By Bob Peterson on 15 September, 2017 - 7:42 am
Try a cross reference. Then look at registers prior to this address and see if there's anything...
Generator Seismic Probes MS5001
The gas turbine MS5001 tripped on high seismic vibrations. Both seismic vibration probes values (North and South) spiked simultaneously and caused tripping.
By Bicycle_mechanic on 19 September, 2017 - 6:24 pm
You didn't mention your generator setup! But I would aslo look into the generator excitation.(diode...
Reading Register Data from a Modbus PLC Simulator
Establishing a connection to a Modbus PLC simulator via Modbus TCP using C code by reading register data.
By Chuy on 19 September, 2017 - 5:16 pm
I got it to work now. I am able to request data and get a response from the Server. One thing that...
Temperature Control Valve Not Responding
Control valve is not responding to Temperature Controller command
History Module in TDC 3000
Checking History module used and free space in TDC 3000
Interface via Modbus TCP (C Environment)
Systems interface via modbus TCP
MODBUS RTU to RS485 Configuration
Posted by Shandene Solomons on 13 September, 2017 - 6:24 am
I'm trying to set up comms from a PLC to a VFD using MODBUS. PLC has RS232 and VFD has RS485 running through a RS232 to RS485 serial converter.
OASyS 6.2 Hot and Standby Racing
SCADA OASyS 6.2, dual system. The two servers don't want to work as hot and standby.
Connecting FA-M3 PLC to Matrikon OPC for Modbus
Connect the Yokogawa FA-M3 PLCs to Matrikon OPC Server for Modbus